I have had a lot of problems with Windows 7 Pro for several months.
The system is legal, a sticker on the casing, it is easily activated via the Internet after installing a clean system from a DVD. There is, however, a strange problem. Windows 10 pro was once activated on this system, but I gave up and re-uploaded cleanly to Windows 7.
Since resigning from W10 I have a lot of problems with deactivating Windows 7 for no reason.
Something like the photo appears to me.
I have to retype the key and activate. Of course, I enter the same key that is supposed to be invalid! Activation takes 10-15 seconds and then I have a message that activation was successful and everything is fine. I'm sick of it. This happens on average once a week and most often when the computer is not connected to the Internet. I do something on it (a project), let's say a week, during this time there is no internet and windows will be deactivated.
Can something be done about it?
The computer will be for the kid who is in the dorm. He won't be using the internet. Does this mean I don't have Windows if I don't have internet?
If Windows is not activated, it turns off after 3 days and that's it.
The system is legal, a sticker on the casing, it is easily activated via the Internet after installing a clean system from a DVD. There is, however, a strange problem. Windows 10 pro was once activated on this system, but I gave up and re-uploaded cleanly to Windows 7.
Since resigning from W10 I have a lot of problems with deactivating Windows 7 for no reason.
Something like the photo appears to me.

I have to retype the key and activate. Of course, I enter the same key that is supposed to be invalid! Activation takes 10-15 seconds and then I have a message that activation was successful and everything is fine. I'm sick of it. This happens on average once a week and most often when the computer is not connected to the Internet. I do something on it (a project), let's say a week, during this time there is no internet and windows will be deactivated.
Can something be done about it?
The computer will be for the kid who is in the dorm. He won't be using the internet. Does this mean I don't have Windows if I don't have internet?
If Windows is not activated, it turns off after 3 days and that's it.